18QHTF21-11.907-PD

Overview

The 18QHTF21-11.907-PD is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a standard frequency of 11.907 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates LVCMOS output interface for direct digital logic compatibility
• Features standby capability to reduce power consumption during idle states
• Utilizes a leadless SMD package design for automated surface-mount assembly

Applications

• Digital signal processing circuits requiring stable clock references
• Communication modules utilizing LVCMOS-compatible interfaces
• Embedded systems managing power through standby modes

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead footprint matches the PCB land pattern to guarantee proper soldering and mechanical stability during operation.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS signaling standards. The inclusion of a power-down feature makes it suitable for battery-operated devices where standby current reduction is critical. Evaluate the thermal performance and size constraints of the 4-SMD package relative to the available board space.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series typically offers various frequency options within a standardized small form factor. The 'PD' suffix indicates the presence of a power-down control feature, distinguishing it from standard continuous-operation variants in the same package family.

Replacement Considerations

Direct substitutes must match the 11.907 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and jitter specifications to ensure functional equivalence in the existing circuit design.